A water pipe providing sexual stimulation includes a tube with an exit port at its upper end, an reservoir port at its lower end, and an inlet port. The navigation control includes a plurality of dynamic controls defined as part of the navigation control. Fault detection routines detect protocol stack and application level faults of a network gatekeeper. The grooves may have a first depth at a perimeter of the outsole and a second depth, greater than the first depth, at the center of the outsole.